Reverse Lunge to Single-Leg Jump
Stand with feet directly under your hips, hands clasped together at chest. Step backward into a deep lunge, so both knees are at a 90-degree angle, right knee nearly touching the floor. Drive the left heel into floor and explode up, raising right knee quickly in front of you and jumping off the floor with your left foot. Return immediately to the deep backward lunge. Repeat, trying to get as much range of motion as possible, for 10 reps. Switch sides for another 10 reps.